Sms Siemag Aktiengesellschaft

Sms Demag Ag

Sms Siemag Aktiengessellschaft

Sms Group Gmbh

Matthias Meyn

Manfred Schubert

Peter Monheim

Reinhard Scholz

Thilo WÜBBELS

An installation for production of the secondary steel based on scrap in which the scrap () is fed in a scrap preheater () through a charging device (), is preheated there and, finally, is brought into a smelting unit () and is melted there with primary energy only, the process gases (), which leave the smelting unit (), are not used for directly preheating the scrap () but are rather used indirectly by heating a gaseous preheatable medium, e.g., air () or inert gas, whereby energetic, fluidic, and spatial decoupling of preheating and melting and of post-combustion and preheating is achieved.

Installation for production of secondary steel based on scrap

With the production of the secondary steel based on scrap, wherein the scrap () is fed in a scrap preheater () through a charging device (), is preheated there and, finally, is brought into a smelting unit () and is melted there with primary energy only, the process gases (), which leave the smelting unit (), are not used for directly preheating the scrap () but are rather used indirectly by heating a gaseous preheatable medium, e.g., air () or inert gas, so that energetic, fluidic, and spatial decoupling of preheating and melting and of post-combustion and preheating is achieved.

Method of production of secondary steel based on scrap

At the production of the secondary steel based on scrap, wherein the scrap () is fed in a scrap preheater () through a charging device (), is preheated there and, finally, is brought into a smelting unit () and is melted there with primary energy only, the process gases (), which leave the smelting unit (), are not used any more for directly preheating the scrap () but are rather used indirectly by heating a gaseous preheatable medium, e.g., air () or inert gas, whereby energetic, fluidic, and spatial decoupling of preheating and melting and of post-combustion and preheating is achieved.

Method and installation for production of secondary steel based on scrap

In the metallurgical treatment of metals, metal melts and/or slags in a metallurgical unit or melting vessel, especially in electric arc furnaces, injection devices () are used for blowing in or up oxygen-rich gases () and/or carbonaceous substances, which cause as long as possible gas jet (') with a high pulse energy to strike to strike the surface of the slag or metal. It is known to envelope produced gas jet (&#x2032;), thereby focusing it. According to the invention, such an envelope is obtained by using a hot gas (&#x2032;) that is preaccelerated to such a degree that the central gas jet (&#x2032;) is preferably without pulse losses.

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Hilden, Germany

Matthias Meyn